Officially Graded Hay and Its Chemical Composition<sup>1,</sup><sup>2</sup>

Wakefield, R. C.; Hosterman, W. H.; Briggs, Rodney A.; Ahlgren, Gilbert H.; Randle, Stacy B

doi:10.2134/agronj1955.00021962004700110004x

Cited by 1 publication

(1 citation statement)

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“…Nutritive value measurements were reported in only three articles in Volume 47 of Agronomy Journal and consisted of simply crude protein (Sullivan and Roulley, 1955; Willhite et al, 1955) or proximate analyses. Proximate analyses (following the Weende system proposed in the 1800s) consist of measures of crude protein, crude fiber, ether extract, nitrogen‐free extract, and ash (Wakefield et al, 1955). The following year Sullivan et al (1956) noted that crude fiber was inadequate as an estimate of carbohydrate availability and suggested the use of cellulose and lignin.…”

Section: Assessing Nutritive Valuementioning

confidence: 99%

Fifty Years of Grassland Science Leading to Change

Nelson

Burns

2006

Crop Science

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Division C‐6 was established in 2000, but members associated with forages and grazinglands have been active in the Crop Science Society of America (CSSA) since its inception; 21 have served as President and many authored textbooks and comprehensive reference works. Complex forage and pasture mixtures were common in 1955, but shifted to monocultures in the 1960s and 1970s. Mixtures returned in the 1980s as N prices increased, broader values of legumes became known, nutritive value was better understood, and environmental issues increased. Alfalfa (Medicago sativa L.) for dairy production had strong leadership from the private sector in seed production and breeding. Tall fescue (Festuca arundinacea Schreb.) was well‐adapted, conserved soil, and extended grazing in the transition zone to increase beef cow–calf production. Bermudagrass [Cynodon dactylon (L.) Pers.] benefited from vegetative propagation, conserved soil, and was improved for adaptation, yield, and nutritive value. Yield advancements, except for a few species, have been discouraging. Management benefited from advances in disease resistance, methods for assessing nutritive value, and understanding the role of endophytic fungi. Modest increases in nutritive value, coupled with improved pasture management, have increased animal performance. Emerging interests include biomass, carbon sequestration, and roles of biodiversity. Molecular techniques offer potential to better understand the plants and make genetic progress.

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Section: Assessing Nutritive Valuementioning

confidence: 99%